foo.cc: In function 'int find(int)':
foo.cc:10:58: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   10 | int find(int x){int l=1,r=2*m+n,pos;while(l<=r){int mid=l+r>>1;if(query(mid)>=x)pos=mid,r=mid-1;else l=mid+1;}return pos;}
      |                                                         ~^~
foo.cc:10:118: warning: 'pos' may be used uninitialized [-Wmaybe-uninitialized]
   10 | int find(int x){int l=1,r=2*m+n,pos;while(l<=r){int mid=l+r>>1;if(query(mid)>=x)pos=mid,r=mid-1;else l=mid+1;}return pos;}
      |                                                                                                                      ^~~
foo.cc:10:33: note: 'pos' was declared here
   10 | int find(int x){int l=1,r=2*m+n,pos;while(l<=r){int mid=l+r>>1;if(query(mid)>=x)pos=mid,r=mid-1;else l=mid+1;}return pos;}
      |                                 ^~~

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